MPA’s newest entries into their bolt-action rifle series, offered in various 6mm and 6.5mm chamberings, are built on a MPA tactical aluminum chassis with a Stiller’s Precision TAC Series action and MPA/Spencer hand-lapped barrel.

The MPA chassis is produced from 6061 aluminum with a v-bedding system which provides additional clearance for glass bedding action and the straight section of the barrel. The MPA buttstock comes with an adjustable cheek riser, length of pull and monopod.

The 6mmBA and 6.5mmBA also feature a front mounted bridge with Picatinny rail and a lower mounted Picatinny rail, plus a 20 MOA scope rail. The body is finished in a cerakote finish of either black or flat dark earth.

The MPA 6mmBA and 6.5mmBA are compatible with any AICS or AW compatible magazines.

The Spencer/MPA hand-lapped rifle barrel is produced from 416RQ stainless steel and is precision gun drilled, reamed and honed. It is pull-button rifled using CNC produced twist guides to exacting and consistent twist control and stress relieved in a Cress Vacuum Furnace and hand-lapped to exacting sizes, removing any and all tooling marks.

The barrels are tested and verified using a Sheffield Air Gage Inspection System to .0001” size variance with additional inspection on a video borescope.

The Stiller’s Precision TAC Series premium actions, produced for MPA, have recoil lugs ground to .0001” flatness and parallelism. The action is machined from heat-treated stainless steel and the face, tenon and lug abutment cuts are machined in a single setup, ensuring exact parallelism and perpendicularity for critical features that affect accuracy.

The Stiller’s Precision TAC Series bolt, also produced for MPA, is a one-piece design with the bolt, lugs and handle machined from a single piece of 4140 heat-treated steel and all critical features and dimensions are finished on a CNC OD grinder. All bolts feature spiral fluting and are hand-lapped and fitted individually to each action. The bolts have a black nitride finish.

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